Question

find the value of r if 3x​

Answer 1

Answer: 3x2-2xr-r=0

Equal roots means zero

Let x = 1

3.1-2.1r-r=0

3-2r-r=0

-3r=0+3

-3r=3

R=3/-3

R= -1

Step-by-step explanation: let x= 3

3x2-2xr-r=0

3.9-2.6r-r=0

27-12r-r=0

27-13r=0

-13r=-27

R= 27/13

None of these is the answer